docs: def _parse_abbreviation(self, abbr):
          """
          Parse a team's abbreviation.
  
          Given the team's HTML name tag, parse their abbreviation.
  
          Parameters
          ----------
          abbr : string
              A string of a team's HTML name tag.
  
          Returns
          -------
          string
              Returns a ``string`` of the team's abbreviation.
          """
          if 'cbb/schools' not in str(abbr):
              return None
          abbr = re.sub(r'.*/schools/', '', str(abbr))
          abbr = re.sub(r'/.*', '', abbr)
          return abbr